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    政大機構典藏 > 商學院 > 資訊管理學系 > 會議論文 >  Item 140.119/74637
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/74637

    Title: A control policy for γ-nets without reachability analysis and siphon enumeration
    Authors: Wu, W.;Chao, D.Y.;Yu, Fang
    Contributors: 資管系
    Keywords: Control policy;Deadlock prevention;Optimal controller;Permissive controllers;Reachability analysis;Research topics;Sequential process;Flexible manufacturing systems;Petri nets;Siphons;Controllers
    Date: 2013
    Issue Date: 2015-04-16 17:36:35 (UTC+8)
    Abstract: Synthesizing maximally permissive controllers with fewest monitors has been a popular research topic. Current optimal controllers for large flexible manufacturing systems (FMS) require costly time consuming reachability analysis. Our previous work shows that among all n-dependent siphons, only one siphon (whose unmarked state follows specific token distribution) needs to be controlled. This greatly simplifies the synthesis as well as minimizes the number of monitors required while making the controlled net nearly maximally permissive. However, some live states may get lost. To reach more live states, the controller regions must be refined to be less affected or disturbed by the monitors and their controlled arcs. We observe that the markings of all the resulting controller regions follow a simple pattern. Based on this pattern of unmarked siphons, this paper further proposes a maximally permissive control policy for a subclass of S3PR (Systems of Simple Sequential Processes with Resources). © 2013 IEEE.
    Relation: IEEE International Conference on Automation Science and Engineering,2013, 論文編號 6653897, Pages 1133-1138, Madison, WI; United States; 17 August 2013 到 20 August 2013; 代碼 101740
    Data Type: conference
    Appears in Collections:[資訊管理學系] 會議論文

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